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Asus MW221C User Manual

Asus MW221C
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22" LCD Color Monitor ASUS MW221C
1
Service
Service
Service
Horizontal Frequency
30-82 KHz
TABLE OF CONTENTS
Description
Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Table Of Contents.......……..............................…........1
Revision List.........................................…......2
Important Safety Notice.........................3
1.Monitor Specification..............................………........4
2.LCD Monitor Description…………………………….......5
3.Operation Instruction…………...............…...........6
3.1.General Instructions......................................6
3.2.Control Button…………….…..............……...............6
3.3.OSD Menu…………….…...........................…............8
4.Input/Output Specification............……………............11
4.1.Input Signal Connector............………….................11
4.2.Factory Preset Display Modes..........................12
4.3.Power Supply Requirements...............................12
4.4.Panel Specification.....……..................13
5.Block Diagram…..…...................…………................16
5.1.Software Flow Chart……..…………………....….......16
5.2.Electrical Block Diagram.........18
6.Schematic……………......................................20
6.1 Main Board.............................................20
6.2 Power Board....……....................................25
6.3 Audio Board....……....................................27
7.PCB Layout..………….......................................28
7.1.Main Board………........................................28
7.2.Power Board….......................................30
7.3 Audio Board....………....................................33
7.4.Key Board…………….....................................33
8.Maintainability……….......................................34
8.1.Equipments and Tools Requirement...............34
8.2.Trouble Shooting…………..............................35
9.White-Balance, Luminance adjustment.............41
10.Monitor Explode View………..…….…............43
11.BOM List…………………………………............45
12.Different Parts List………………………………60
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
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Asus MW221C Specifications

General IconGeneral
Screen Size22 inches
Resolution1680 x 1050
Panel TypeTN
Brightness300 cd/m²
Contrast Ratio1000:1
Dynamic Contrast Ratio3000:1
Response Time5 ms
Viewing Angle (Horizontal)170°
Viewing Angle (Vertical)160°
Color Support16.7 million colors
Input PortsDVI, VGA

Summary

SAFETY NOTICE

Revision List

1. Monitor Specifications

2. LCD Monitor Description

3. Operating Instructions

3.1 General Instructions

General steps for connecting and powering on the monitor.

3.2 Monitor Control Buttons

Details the function of the monitor's control buttons.

3.3 OSD Menu

On-Screen Display menu for adjusting monitor settings.

3.4 Image Settings

Adjusting brightness, contrast, sharpness, saturation, position, and focus.

3.5 Color Settings

Adjusting color temperature and skin tone settings.

3.6 Input Source Selection

Selecting between VGA or DVI input sources.

3.7 System Setup Options

Adjusting system settings like volume, language, and reset.

4. Input/Output Specifications

4.1 Input Signal Connectors

Pinout details for analog and DVI input signal connectors.

4.2 Factory Preset Display Modes

List of supported display modes, resolutions, and frequencies.

4.3 Power Supply Requirements

Specifications for AC voltage, frequency, and current.

4.4 Panel Specifications

4.4.1 General Features

Overall features of the 22-inch TFT-LCD Module M220EW01.

4.4.2 Display Characteristics

Detailed characteristics like active area, pixel pitch, response time.

4.4.3 Optical Characteristics

Optical properties such as viewing angle, luminance, and contrast.

4.4.4 Electrical Characteristics

Electrical parameters for the TFT-LCD and backlight.

5. Block Diagram

5.1 Software Flow Chart

Diagram illustrating the software's operational flow.

5.2 Electrical Block Diagram

Detailed electrical block diagram of the main board.

5.2.1 Main Board

5.2.2 Inverter/Power Board

6. Schematics

6.1 Main Board Schematic

Schematic of the main board (715G2186-3).

6.2 Power Board Schematic

Schematic of the power board (715G2594-1).

6.3 Audio Board Schematic

Schematic of the audio board (715G2709-1-3).

7. PCB Layout Diagrams

7.1 Main Board PCB Layout

Component placement diagram for the main board.

7.2 Power Board PCB Layout

Component placement diagram for the power board.

7.3 Audio Board PCB Layout

Component placement diagram for the audio board.

7.4 Key Board PCB Layout

Component placement diagram for the key board.

8. Maintainability Information

8.1 Equipments and Tools Requirement

List of necessary tools for servicing the monitor.

8.2 Troubleshooting

Troubleshooting guide for common monitor issues.

8.2.1 Troubleshooting: Main Board

8.2.2 Troubleshooting: No Picture

8.2.3 Troubleshooting: White Screen

8.2.4 Troubleshooting: Power/Inverter Board

8.2.5 Troubleshooting: W/LED, No Backlight

8.2.6 Troubleshooting: Keypad Board

9. White Balance and Luminance Adjustment

10. Monitor Exploded View

10.1 Exploded View Parts List

List of parts corresponding to the monitor's exploded view.

11. Bill of Materials (BOM) List

12. Model Specific Parts Lists

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